Opening 1Browser leads to janky animation on iPhone 5/iOS 7.1b2

Whenever I tap the handle in the lower right corner to open the 1Browser page, the animation is really… janky. It looks like a piece of rubber being dragged on a pane of glass, skidding along the way. I know iOS is big on both rubbery bouncing effects and glass aesthetics, but I don't believe this is exactly what they had in mind.